Improvement in churns



J'. RANKIN.

Churn.

Patented Jany 16'; 1866.

N, Pains Phmuhognphur, w:

UNiTEn STATES PATENT EETcE.

JOHN RANKIN, OF NEW' YORK, N. Y.

IMPROVEMENT IN CHURNS.

Specification forming part of Letters Patent No. 52,075, dated January 16, 1866.

To all who t m y concern: A is the case or box of the churn, which may Be it known that 1, JOHN RANKIN, of New be supported on suitable legs J J, 850., and B York, of New York county, in the State of is the lid or cover, which is hinged at i, and New York, have invented certain new and useopens in the manner illustrated at Fig. l, and ful Improvements in (/hurns; and I do hereby is provided with vent-holes g g, for the escape declare that the following is a full and exact of the air forced into the case by the blower. description thereof, reference being bad to the As will be seen, the contour of the case or box accompanying drawings, making partof this A in cross-section is oblong, its top and botspecitication. tom being semicircular. i

My invention has for its object to provide a O and l) are two dasher-shafts runninglonchurn which will churn butter with greater gitudinally within the case A and mounted to facility and expedition than churns heretofore turn freely in their bearings at each end. On used, and which at the same time shall be simthe shaft 0 are arranged a series of fans or ple and durable in its construction, and easily beaters, c e, &c., which are so placed on said cleaned; and to these ends my invention conshaft and so shaped as to constitute a sort of sists in the use of a box or case nearly cylinscrew, which, when the shaft is rotated, will drical in form, and having arranged within operate to force or feed the contents of the box it two dasher-shafts provided with dashers A in a given direction from one end to the placed in helical form and arranged to screw other of said box. On the shaft D are similar or feedin opposite directions, all as hereinafter fans or heaters, f f, which, however, are armore fully explained; and my invention furranged to screw or feed in the opposite directher consists in the use of an oblong fantion to those on shaft 0. Eachof said shafts blower, in connection with and outside of the is mounted at one end on the taper end of a churn-box, and so arranged with and adapted set-screw, k, and at the other end in a socket to the said churn-box and the driving-machinformed in the stud or short shaft 1 2. On ery as to cause a blast of air to be forced in each of said studs 1 2 (which turn freely in (through a long slot in the side of the box) a their hearings in the end of the case A) is fastthin sheet to the lower part of the churn-box ened, outside of the box A, a spur-gear, B and into the mass of cream contained therein, and T, and these gears R T engage with or all as hereinafter more fully explained; and mesh into an internal or rim gear, S, which is my invention further consists in the combined formed on the inner face of the main drivingarrangement of the driving-gears and fan-pulwheel I. This wheel l is mounted to turn ley, as hereinafter set forth. whereby the'sevfreely on a stud or pin, it, which projects from eral parts are put in motion from the main the end of box A. (See Figs. 1, 2.) The said driving-wheel; and my invention further conwheel L may have a suitable handle, u,b y which sists in the employment on the fan-shaft of it is turned in the usual manner. two sets of helicallyarranged fans for the In one side of the box or case A is cut along purpose of inducing to a concentration of the slot, 0, and over this slot, on the outside of blast nearer the center of the churn-case, as the case, is placed a cylindrical blower-case, hereinafter more fully described. H, which is arranged to lift out of its seat, or To enable those skilled in the art to make retaining-straps at pleasure. The shaft 19 of and use my invention, 1 will proceed to desaid blower extends some ways beyond one scribe fully the construction and operation of end of the case H, and is supported where it one of my improved churns, referring by letprojects by a stand, 0", and the end of said ters to the accompanying drawings,inwhichshaft is provided with a small pulley, Whicl Figurel is an end elevation of my improved runs against the outer face or periphery o churn. Fig. 2isalongitndinal section at the the main wheel Z, and which is rotated o driven through friction with the latter.

line 00 m, Fig. 1. Fig. 3 is a vertical cross-sec view of blower-shaft.

In the several figures the same part is designated by the same letter of reference.

on the shaft 19 of the blower, which vanes at so curved and arranged as to induce to a feet ing or forcing of the blast somewhat towar tion at the line 3/ y of Fig. 2, and Fig. 4 detail m m are two sets of curved or helical vane the center of the cylindrical case H, and 0011- Having fully described the construction andsequently insure the full discharge of the blast operation of myimproved churn, what I claim down through the slot 0 in the boxs side. therein as new, and desire to secure by Let- It will be seen by reference to Fig. 3 that ters Patent, 1sthe heaters e and f on shafts O and D sweep l. The use ofa ease or box, A, of a nearly clear the said shafts (J D, so that when both for the purposes set forth.

shafts are in motion, with their numerous 2. Introducing a blast of air in a sheet beaters, c and j, the Whole space within the through a long slot in the side of the box A, case or box A is filled WI 11 or occupied by and by means ofa blower,substautially as debeaters, the two sets feeding in opposite discribed.

rections, and producing the greatest possible 3. The use of the internal gear, S, frictionagitation in the mass of cream, and while the face wheel Z, gears R and T, and friction-pulmass of cream is thoroughly agitated in conley q, the whole combined and arranged to sequence of the arrangement of the two screwdashers and the peculiar shape of box A, a long and continuous sheet of blast is forced down through the inclined slot 0, (see Fig. 3, which will completely inter-mingle with allthe particles of the Whole mass of cream to the greatest possible extent and with the greatest advantage.

It will be observed that the shafts O and D are so arranged that by sun ply turning back the set-screws I: one or both of said shafts may be lifted out of the box for cleaning purposes,

0., Withoutin the least interfering with or deranging the driving mechanism.

y the arrangement, as shown, of the internal driving-gear, S, and friction face of wheel Z with the gears 1t 1 and pulley q, it will be In presence ofseen the whole driving mechanism is rendered J. N. MGINTIRE, compact and effective, and any and all belts or CHARLES SPEER. bands dispensed with.

m m in the shaft p of the blower, whereby a tendency is created in the blast to concentrate somewhat toward the center of the slot 0, substantially as and for the purposes set forth.

5. Making the slot 0 inclined or oblique in cross-section, so as to tend to conduct the sheet of blastdownward in to the mass ofcream.

In testimony whereof I have hereunto set my hand and seal this 7th day of October, 1865.

JNO. RANKIN. [L. 

